1 SAFETY Level sensor with safety function INSTALLATION OPERATION FUNCTIONS COMPONENTS REPAIR...

Transcription

1 REPAIR INSTRUCTI IONS I GV630 N 1 SAFETY Level sensor with safety function INSTALLATION Aligning the appliance Electrical connection Water connection OPERATION Function Special funtions General information on control COMPONENTS Actuator Aqua sensor (optional) Aqua Stop valve Worktop (optional) Flow sensor NTC Regeneration / drainage valve Optical low rinse-aid sensor (optional) Hinge Dispenser Instantaneous water heater Water softening system Detergent-solution pump Filter system Spray system Rinsing and pumping system Door seal Door spring Circulation pump (SICASYM) Water inlet without heat exchanger Water points Montage of the electronic module FUNCTIONS in 1 detergent detection function REPAIR Diagnosis aids FAULT DIAGNOSTICS Controller / module with display Draining Odour Noises Rinsing result Drying result Circulation pump TECHNICAL SPECIFICATIONS _ _ara_en_b a Seite 1 von 52

2 8.1 General technical specifications Consumption rates _ _ara_en_b a Seite 2 von 52

3 1 SAFETY The protective conductor resistance must never exceed the values specified in the standard! The protective conductor is crucial for personal safety and appliance function. When repairs are complete, conduct a test in accordance with VDE 0701 or the corresponding national regulations! When repairs are complete, perform a function and leak test. DANGER Repairs may be carried out by a qualified electrician only! The user may be put at risk and injured by improper repairs! To prevent electric shocks, always comply with the following instructions: If the appliance is faulty, the housing or frame may be live! Electric shock may occur if live components are touched inside the appliance! Before commencing repairs, disconnect the appliance from the power supply! If tests have to be performed while the appliance is live, always use a residual-current-operated circuit-breaker! 202_ _ara_en_b a Seite 3 von 52

4 Sharp edges: Wear protective gloves. WARNING Comply with the following instructions: If conducting the test in accordance with VDE 0701 via the connector, the heater (instantaneous water heater) must be tested directly for insulation faults due to all-pole disconnection (relays; pressure switch) or the differential current must be measured on the appliance! If replacing the dispensing device and the pump sump, beware of sharp edges in the area of the stainless-steel modules. Electrostatic sensitive devices! Please observe handling regulations. Before commencing repairs, always disconnect the appliance from the power supply! If tests have to be performed while the appliance is live, always use a residual-current-operated circuit-breaker! 202_ _ara_en_b a Seite 4 von 53

5 2 INSTALLATION 2.1 Aligning the appliance To ensure a perfect locking function and prevent leaks in the area of the door, the appliance must be aligned precisely via the heightadjustable feet. If the appliance is integrated, the middle rear heightadjustable foot can be adjusted from the front. Note: Built-under and built-in appliances. Using the height-adjustable feet, raise the appliance until the housing touches the worktop. The installation instructions (drilling template) are required for attaching the furniture front to integrated and fully integrated appliances. The tensile force of the door springs in integrated and fully integrated appliances can be adjusted to the weight of the furniture door (See Door spring point). To prevent injury, a side cover can be fitted near the hinges of end appliances which are built in or under or are free-standing. exceeded. The water connection (¾ inch) requires a conventional water line with a water pressure of at least 0.5 bar (0.5 at.) (when the tap is turned on, the water flow rate must be more than 8 l/min.). If the water pressure is more than 10 bar (10 at.), a pressure reducing valve must be installed. The appliances can be connected to warm water up to 60 C. However, it is recommended to connect the appliance to cold water (better drying and washing results). Connection dimensions for all 60 cm dishwashers 2.2 Electrical connection Connect the appliance to a correctly installed earthed socket only. Comply with the specifications on the rating plate. 2.3 Water connection If the appliance is connected to the drain with the standard hose length, the max. permitted height from the floor is 90 cm. If the drainage hose is extended, a max. height of 80 cm must not be a = 1.3 m b = 1.6 m c = 1.4 m (3.6 m with extension set) d = 1.2 m (3.4 m with extension set) e = 1.6 m (3.6 m with extension set) f = 1.2 m (3.2 m with extension set) 202_ _ara_en_b a Seite 5 von 52

6 202_ _ara_en_b a Seite 6 von 53

7 3 OPERATION Pushbuttons / Additional functions Timer programming (ZVW) 3.1 Function The timer programming button enables the start time to be delayed by up to 24 h Top basket (optional) The top basket button must be pressed if only the top basket is to be rinsed. The water points are positioned for top basket rinsing throughout the rinse cycle. However, the programme sequence is the same as for alternate rinsing LED s LED of tap closed Low rinse aid display Low salt display Timer Preselection Top basket funtion Display Main Switch It is placed in the left side out of the control module. The display consists of a 2 1/2-digit 7-segment display. The expected remaining running time is displayed included times longer than 99 minutes. The remaining running time is recalculated at the end of the heating positions. If deviations occur on account of the aqua sensor decisions, water supply temperature, number of utensils, etc., the indicated remaining running time is corrected in these positions. Time jumps of up to 60 minutes may occur Program selector 202_ _ara_en_b a Seite 7 von 53

8 We can select until 6 different programs. Intensive 70 The programme consists of a prerinse at 50, wash cycle at 70, two intermediate rinse cycles, final rinse at 70 and a drying cycle. Please ensure that only the bottom basket is rinsed until the temperature is reached. Auto (depending on model) In the auto programme the Aqua sensor decides not only on a water change after the prerinse, but it also specifies the temperature of the wash cycle and the number of intermediate rinse cycles. If clean water is detected in the prerinse, the water from the prerinse is also used in the wash cycle, a wash cycle at 65, one intermediate rinse cycle and a drying cycle. If dirty water is detected in the prerinse, the prerinse cycle runs, a wash cycle at 51, two intermediate rinse cycles and a drying cycle. Quick 35 /45º The programme consists of a wash cycle at 35 /45º, one intermediate rinse, final rinse at 55 without drying. The Aqua sensor is not active in this programme. Prerinse The programme consists of a prerinse only. The Aqua sensor is not active in this programme. ECO 50 The programme consists of a wash cycle at 50, one intermediate rinse cycle, final rinse at 66 and a drying cycle. The Aqua sensor is not active in this programme. Please ensure that only the bottom basket is rinsed until the temperature is reached. Gentle 40 The programme consists of a prerinse cycle, a wash cycle at 40, one intermediate rinse cycle, final rinse at 55 and a drying cycle. 202_ _ara_en_b a Seite 8 von 53

9 3.2 Special funtions Setting the intensiv drying Settings the hardness range Hold down the main switch and turn to 9 (one position left) the program selector. The set value is indicated on the digital display and the low salt LED flashes. Turning the selector is set the water hardness value between 0 and 7. If the appliance is switched off, the value is saved (Table below) dh fh Clarke mmol / l Salt Set value consumption in g per rinse cycle Standard setting = 4 Hold down the S2 button and switch on the appliance. 0 is indicated on the digital display. If the S2 button is pressed again, 1 is displayed and intensive drying is switched on. If the appliance is switched off, the value is saved. If intensive drying is activated, the temperature is increased by 3 K in the final rinse to improve the drying result De-activating the rinse-aid refill indicator Hold down the S1 button and switch on the appliance. 1 is indicated on the digital display. If the S1 button is pressed again, 0 is displayed and the rinse-aid refill indicator is de-activated. I:00 = switched off I:01 = switched on If the appliance is switched off, the setting is saved. If the rinse-aid refill indicator is de-activated, the temperature is increased by 3 K in the final rinse to improve the drying result. (see also 3 in 1 detergent detection) Program Reset To reset the program in these models is one position in the program selector. That means, with the appliance switched on, turn the selector to the reset position, and in 3 seconds the program is reset. It pumps during one minute, and reset the module. 202_ _ara_en_b a Seite 9 von 53

10 3.3 General information on control Sensors Regeneration electronics The electronics determine, in comparison with the water hardness set on the appliance, the volume of water which is possible until the softening system is exhausted. All outgoing signals from the door switch, the level switch, the NTC sensor and the refill switches are recorded and evaluated by the microprocessor at the required time Tap closed The number of rinse cycles are counted. Regeneration then takes The appliance detect that the tap is closed when it does not receive place once the maximum possible number of rinse cycles has been any signal from the flow sensor after 30 seconds. reached Components The sequence characteristics of the regeneration electronics are described under Initial start-up / Replacing the electronics Warm water detection If the water running into the final rinse cycle is hotter than 45 C, the temperature in the final rinse cycle is increased to 72 C in order to increase the inherent heat of the dishes. The heat exchanger is not filled. The components such as the valves, the detergent and rinse aid dispensers and the circulation pump are actuated by triacs (see listing of triacs). The drainage pump and the instantaneous water heater are switched on by relays Memory electronics The electronics module has its own memory which remembers the programme last selected. If no new selection is made at the start of the programme, the programme last selected will run Power failure The electronics module has a power failure memory function which ensures that the current rinse programme continues in the event of a power failure or programme interruption. 202_ _ara_en_b a Seite 10 von 53

11 3.3.8 Listing the triacs If replacing a module due to a defective triac, ensure that the actuated component is also checked. Comply with ESD information! A = Dispenser actuator B = Water points C = Filling valve D = Regeneration valve E = Heat exchanger outlet valve 202_ _ara_en_b a Seite 11 von 53

12 3.3.9 Initial start-up / Replacing the electronics The following programme sequence must be taken into consideration during the initial start-up or when replacing the electronics. (Programme counter = 0!) Programme sequence during the initial start-up without heat exchanger PZ>0 Programme counter PZ=0 Pump 15 sec. Salt refill = OFF Salt refill indicator Filler valve on 10 sec. Salt refill = ON Regenerate 60 sec. Increase loop counter by 1 PZ=>3 Check counter PZ<3 Start rinse programme 202_ _ara_en_b a Seite 12 von 53

13 4 COMPONENTS 4.1 Actuator The thermo hydraulic system consists of a metal cylinder with plunger. The cylinder is filled with a substance which expands greatly when heated. The heat source is a PTC (positive temperature coefficient) which is in direct contact with the metal cylinder. A strong pressure spring returns the plunger back to its original position when the heat source is switched off. When voltage is applied to the PTC, the PTC heats up and transfers the heat to the wax-filled metal cylinder. The wax expands and forces the plunger out of the cylinder. The plunger transfers the mechanical movement to the release mechanism for dispensing the detergent and rinse-aid. If the heat source is switched off, the volume of wax is reduced by the cooling process. The pressure spring returns the plunger back to its original position. The actuation time is approx. 2 min., the reset time approx. 3 min. Technical specifications: Nominal voltage V 1 = PTC 2 = Contact 3 = Pressure spring 4 = Wax-filled cylinder 5 = Contact 6 = Plunger X = Plunger travel Frequency 50 / 60 Hz Resistance kω 202_ _ara_en_b a Seite 13 von 53

14 4.2 Aqua sensor (optional) A The infrared light-emitting diode and the photodiode are located opposite each other in a U-shaped translucent housing on a board. The infrared diode transmits infrared light through the water flowing between the U to the light-sensitive base of the photodiode which then becomes conductive. If the water is turbid, the light emitted by the infrared diode can no longer reach the photodiode. The absent voltage signal is detected by the microcomputer. Depending on the programme type, the water is changed after the prerinse or even the washing temperature is changed. If the turbidity value is not reached, the water remains in the rinsing tank for the wash cycle. In each programme sequence in which the Aqua sensor is active the sensor is also calibrated. If a calibration cannot be implemented successfully, a permanently stored programme is executed and an error is saved in the module. = Photodiode B = Infrared diode C = Detergent solution 202_ _ara_en_b a Seite 14 von 53

15 4.3 Aqua Stop valve The valve system consists of two valves in series, which are actuated electrically parallel, and the filler valve and safety valve. The safety function may be actuated via the safety level chamber or electrically via the float in the base pan. The water flow is then stopped mechanically. An electric solenoid valve which is enclosed by a housing is attached to the tap. The housing is connected to the base pan by a leakage water hose (sleeve of the inlet hose). The water inlet hose, which connects the valve to the water inlet, and the electrical control line for the solenoid valve are located inside this leakage water hose. Technical specifications: Nominal voltage V Frequency 50 Hz Resistance 2 kω Flow rate 2.75 l/min Water pressure bar A = Solenoid valves B = Control cable C = Inlet hose D = Leakage-water hose 202_ _ara_en_b a Seite 15 von 53

16 Removal Open the housing; disconnect the inlet hose; sever the electrical connection cables; strip the insulation from the ends of the wires; push the shrink-fit hose over the cable; connect the wires to the insulating sleeves (1). After fitting, warm the connectors until the shrinkage process occurs and the hot-melt adhesive comes out of the ends of the connectors (2). Push the shrink-fit hose over the connectors and also warm until the shrinkage process is complete (3) 202_ _ara_en_b a Seite 16 von 53

17 4.4 Worktop (optional) Catch tappets are located on the rear right and left hand sides of the worktop. To remove the worktop, press up the catch tappets, push the worktop back and lift off. 202_ _ara_en_b a Seite 17 von 53

18 4.5 Flow sensor Output signal: Rectangular signal Switched current: max. 5 ma The flow sensor is integrated in the water supply and registers the amount of incoming water. It consists of a housing, a fan impeller with a permanent magnet and a printed circuit board with reed switch. The water sets the fan impeller moving. The magnet attached to the fan impeller actuates a reed switch 2x per revolution (north/southsouth/north). The generated impulses are counted by the electronics module and cannot be measured. Nominal output signal at 2.5 l/min flow rate: 208 impulses / litre To facilitate replacement of the flow sensor, immerse the hoses in hot water. (Do not use washing-up liquid or a similar lubricant) A = Water inlet B = Water outlet C = Connector When installing the impeller wheel, ensure that the direction of flow is correct. An arrow on the flow sensor indicates the direction of flow. Technical specifications: Hydraulic data: Minimum flow rate: 0.8 l/m Maximum flow rate: 4.0 l/m Nominal flow rate: 2.5 l/m Electrical specifications: 202_ _ara_en_b a Seite 18 von 53

19 4.6 NTC 4.7 Regeneration / drainage valve The utilised temperature safety switch (>85 C) is combined with the NTC sensor. If a fault occurs, the heater is switched off at a water temperature of 85 C (operates in switching mode). Temperature in C Resistance in kw Tolerance +/ C The regeneration valve and the drainage valve are situated in the water softening system. If the regeneration valve is actuated, the water stored in the regeneration chamber is conveyed through the water softening system. If the drainage valve is actuated, the water stored in the heat exchanger (HE) is conveyed into the rinsing tank via the water softening system Technical specifications: Nominal voltage V Frequency 50 Hz Resistance 2.45 kω A = Water softening system B = Regeneration valve C = HE drainage valve 202_ _ara_en_b a Seite 19 von 53

20 202_ _ara_en_b a Seite 20 von 54

21 4.8 Optical low rinse-aid sensor (optional) The optical low rinse-aid sensor consists of a transmitter diode and a receiver diode. A light beam is transmitted from the transmitter diode to the receiver diode via a prism. If the dispenser is full, the light beam in the prism is scattered. The received signal is weaker than the transmitted one. If the dispenser is empty, the light beam in the prism is reflected. The received signal is the same as the transmitted signal. The module evaluates the received signal and the refill indicator LED is actuated. A = Transmitter diode B = Receiver diode C = Prism 202_ _ara_en_b a Seite 21 von 54

22 4.9 Hinge Unscrew the outer door, the base, the angle strip and the side panels; disengage the tension cord from the hinge lever; unscrew the hinge lever from the inside door; unscrew the hinge plate from the container frame. Unscrew the fixing screw which connects the hinge to the base pan; lever the hinge plate off the frame; pull the hinge up and out; remove spring clamp; Two-piece hinge bearing bush: Open the bearing bush by disengaging the spacer with a screwdriver (see sketch) One-piece hinge bearing bush: Open the bearing bush by bending up the catches with a screwdriver. When the bearing bush is removed, it must be renewed. A = Hinge plate E = Tension cord B = Hinge lever F = Tension spring C = Bearing bush G = Spacer D = Spring clamp H = Catches 202_ _ara_en_b a Seite 22 von 54

23 Leave the upper basket in the appliance in order to remove the dispenser; close the door and then press in the unlocked dispenser. Wear protective gloves; risk of cuts. Unscrew the outer door. Disconnect the power. Using a screwdriver, lift the retention plates stamped out of the inner door off the catch tappets. Note: Adjust the retention plates to the middle before installing the dispenser to ensure that all the catch tappets lock securely. Before installing the seal, lubricate with washing-up liquid Dispenser The release mechanism is actuated via an actuator. When the actuator is actuated for the first time, the detergent-dispenser cover is opened. At the same time the release pawl engages with the switching core of the rinse-aid lever so that when the actuator is actuated again, the dosing plunger is lifted off the rinse aid. Technical specifications: Rinse-aid filling quantity 120 ml Setting 1 6 per 1 ml Detergent capacity max. 45 g See Actuator for additional technical specifications. Removal: 202_ _ara_en_b a Seite 23 von 54

24 A = Dosing plunger D = Magnetic float B = Switching core E = Reed contact (optional) C = Actuator F = Optical sensor (optional) 202_ _ara_en_b a Seite 24 von 55

25 4.11 Instantaneous water heater The instantaneous water heater is installed in the water circuit for the spray arms. When the detergent solution flows through the instantaneous water heater, a rubber membrane attached to the flange actuates the safety pressure switch for the heating element. If the pressure drops, the heater switches off. The heating position is over travelled, preventing dry heating. Removal: Unscrew outside door, base panel, angle strip and side panels. Disengage the tension cords from the hinge levers. Unscrew the screws which connect the base pan to the hinge plates. Unscrew the rinsing tank from the rear panel of the base pan. Disconnect the door cable harness from the plug-and-socket connection in the base pan. Place the appliance on its back, carefully remove the base pan and loosen the catch between the level sensor housing and the water softening system. Disconnect the circulation pump with the rubber support from the base pan. Open the base pan until the instantaneous water heater can be screwed off the pump sump. Unscrew the instantaneous water heater. Release the catch on the pump sump and lever the instantaneous water heater off the plug-and-socket connections of the pump sump / circulation pump. Technical specifications: Nominal voltage V Frequency 50 Hz Power 2150 W Resistance approx. 22 Ω A = "Clicking" safety device / NTC; 85 C safety switch E = From the circulation pump B = Membrane F = To the lower spray arm C = Heating element G = To the upper spray arm D = Safety pressure switch 202_ _ara_en_b a Seite 25 von 55

26 4.12 Water softening system Unscrew the outside door, the base panel, the angle strip and the side panels; unfasten the tension cords on the hinge levers; unscrew the screws which connect the base pan to the hinge plates; unscrew the rinsing tank from the rear panel of the base pan; separate the door cable harness on the plug-and-socket connection in the base pan; remove the electrical connections from the regeneration and drainage valve; unscrew the nut which connects the salt dispenser to the rinsing tank; draw saline solution out of the dispenser with a suction syringe; place the appliance on its back; carefully remove the base pan and release the catch on the level sensor housing and the water softening system; separate the circulation pump with the rubber support from the base pan; remove the base pan until the water softening system can be pulled off the plug-and-socket connections on the water inlet and the level sensor housing; pull out the reed switch; Note: The following work must be carried out before the water softening system is installed: Place the seal on the filler neck of the salt dispenser. Insert sealing rings into the plug-and-socket connections. Put rubber cap on the bearing support in the base pan for the pump sump. Insert the switch rod for actuation of the safety level switch. Fit the rubber bearing to the circulation pump. Salt dispenser Capacity: Fine grained salt approx. 2.0 kg Rough-grained salt approx. 1.5 kg Salt tablets approx. 0.7 kg 202_ _ara_en_b a Seite 26 von 55

27 4.13 Detergent-solution pump Remove the base panel and base plate; the detergent-solution pump is locked in position at the front left side of the pump sump. To remove the detergent-solution pump, disengage the lever (1), then rotate the pump forwards (2). The pump can be removed by rotating it through approx. one quarter of a revolution (3). Technical specifications: Nominal voltage Frequency Resistance Delivery head Conveying capacity V 50 Hz Ω 0.9 m 10 l / min 202_ _ara_en_b a Seite 27 von 55

28 4.14 Level sensor with safety function If the dishwasher controller or components malfunction, causing the machine to overfill, the valve combination is closed via the safety system, shutting off the water supply. The drainage pump is switched on via the safety level switch. Pumping continues until the safety level switch switches back again. Any leaks inside the machine are collected in the base pan. Any leaks in the supply hose are conveyed to the base pan via the leakage water hose. Once a predefined level has been reached in the base pan, the float uses a switch lever to actuate the safety level switch which then electrically switches off the filling and safety valve. At the same time the drainage pump is switched on, the detergent solution is removed from the rinsing tank and the drainage pump switches to continuous operation. A = Safety level switch B = Safety level float C = To the pump sump D = Float in the base pan E = From the water softening system F = _ _ara_en_b a Seite 28 von 55

29 4.15 Filter system The rough filter cylinder must be locked firmly to the pump sump (observe marking) in order to prevent dirt particles penetrating the rinsing circuit. 3-stage filter system A = Coarse filter C = Microfilter cylinder B = Surface filter D = Fine filter cylinder 4-stage filter system 202_ _ara_en_b a Seite 29 von 55

30 A = Coarse filter E = Rinsing tank B = Fine filter cylinder F = Pump sump C = Surface filter G = Supply pipe to upper spray arm D = Microfilter cylinder H = Lower spray arm 202_ _ara_en_b a Seite 30 von 56

31 4.16 Spray system The rotor spray system consists of three spraying levels, the lower and upper spray arms and a roof shower head. Water is supplied to the upper spray arm and the roof shower head via the supply pipe attached to the inside of the tank rear panel. This pipe is connected by a direct plug-and-socket connection to one of the two outlets on the instantaneous water heater situated under the pump sump. The upper spray arm is attached by its inlet pipe directly to the top basket. Connection to the supply pipe is by a variable coupling. If appliances feature a height-adjustable top basket, the water inlet to the spray arm is adjusted via this variable coupling. The lower spray arm is connected with its bearing assembly to the second outlet of the instantaneous water heater directly via the pump sump and features a nozzle on the underside for cleaning the surface filter. A = Roof shower head D = Pump sump B = Coupling E = Lower spray arm C = Supply pipe F = Upper spray arm 202_ _ara_en_b a Seite 31 von 56

32 4.17 Rinsing and pumping system The circulation and drainage pumps as well as the instantaneous water heater are connected to the pump sump via plug-and-socket connections. The instantaneous water heater is also screwed securely to the pump sump. The filter system consists of four-fold filtration (coarse filter, fine filter cylinder, surface fine filter, micro fine filter). The pump sump, which houses the micro fine filter, is covered by the surface fine filter. The surface fine filter is attached with the combined coarse and fine filter cylinders to the base of the pump sump via a bayonet catch. The detergent solution is drawn into the pump sump by the circulation pump and forced into the instantaneous water heater. At the appropriate pressure the pressure switch for the heater is actuated via the flange-mounted membrane. A temperature controller connected in series disconnects the appliance at 85 C to prevent overheating. In mechanically controlled appliances, this temperature switch is combined with a 65 C temperature controller and housed in one module, in electronically controlled appliances it is combined with an NTC sensor (negative temperature coefficient) and housed in one module. The sensor surface is in direct contact with the detergent solution. The Aqua sensor is situated at the outlet of the instantaneous water heater in the detergent solution flow and measures the degree of turbidity. As the drainage pump is attached directly to the pump sump, the impeller wheel and non-return valve are accessible in the rinsing tank when the cover has been removed. A = NTC / temperature controller H = Detergent-solution pump B = Safety temperature controller I = Pump wheel cover * C = Instantaneous water heater J = Non-return valve D = Circulation pump K = To the lower spray arm E = Seal set L = To the upper spray arm F = Pump wheel M = Aqua sensor * G = Pump sump * Optional 202_ _ara_en_b a Seite 32 von 56

33 4.18 Door seal The new seal must be adjusted prior to installation: adjust the length of the seal to the circumference of the container. cut the ends of the seal at an angle 45. place the 40 mm seal on the base of the container. (Splash-proof protection for the lower corners). Press in the seal evenly and without any kinks Warning! A = Towards middle of rinsing tank Prior to insertion, ensure that the seal lip is pointing towards the middle of the rinsing tank, otherwise there will be leaks in the area of the door. 202_ _ara_en_b a Seite 33 von 56

34 4.19 Door spring The door spring compensates for the weight of the furniture front. The door springs are situated on the right and left under the base pan. The tensile force is transferred to the door hinge with a tension cord via a deflection roller. The clamping force of the spring can be increased with the enclosed adjusting screw (built-in appliances only) via the deflection roller. If the furniture doors are very heavy (e.g.: marble), the tensile force of the standard installed springs and maximum pretension of the spring tensioner is no longer adequate. In this case stronger door springs (see table) may be used. If furniture doors are very light, the door springs can also be replaced by lighter ones. The door springs must be replaced in pairs only! The maximum furniture door weight is approx.10.5 kg. Spring force Coloured dot Material no.: Max. weight of furniture max. grey Approx.10.5 d kg green black brown red min. yellow kg A = Adjusting screw B = Spring clamp (deflection roller) C = Tension cord Note: The door springs can be identified by a coloured dot on the rear of the appliance. 202_ _ara_en_b a Seite 34 von 56

35 4.20 Circulation pump (SICASYM) The circulation pump is driven by a single-phase a.c. motor. The switching of the two motor windings with the motor capacitor is actuated either via electronics or a relay on the motor connection or via the module. In the start phase the two windings (one in series with the capacitor) are connected in parallel to each other and directly to the mains voltage and generate a very high starting torque. After the switchover phase, the windings are then in series (one behind the other), i.e. each winding is connected to half the mains voltage. The motor is then adjusted optimally to the (operating) pump and generates very little noise apart from a very low power consumption for label AAA, as the windings are connected to half the mains voltage during operation. Terminal diagram: Operation: Start: Removal: Remove side panels and base plate, disconnect the stainless steel tank / plastic base pan on the right, consisting of 2 screws (front and rear). Raise the tank and secure with approx. 4 cm thick object. 202_ _ara_en_b a Seite 35 von 56

36 The circulation pump is locked in position. Using a screwdriver, press in the catch on the right side of the circulation pump and rotate the pump in a clockwise direction. The pump can then be removed. Technical specifications: Nominal voltage Frequency Resistance Delivery head V 50 Hz Ha approx. 80 Ω HI 1 approx. 85 Ω HI 2 approx. 13 Ω 3.1 m To release the impeller, block the rotor with a pen or screwdriver (hole between the rotor blades). Remove the pump housing and press out the mechanical seal. Note: if the motor is replaced, the spacer washer on the motor shaft must be fitted to the new motor, otherwise the impeller will run less smoothly or will lock! Installation is in reverse sequence. Prior to installation, lubricate the seal with washing-up liquid. 202_ _ara_en_b a Seite 36 von 56

37 4.21 Water inlet without heat exchanger When the filler valve has been opened, the water flows through the flow sensor towards the integrated inlet via a free flow channel and into the regeneration chamber. When the regeneration chamber has been filled, the water flows through the water softening system via the overflow channel and then flows as soft water into the pump sump. When the electronics module has detected the prefill level via the flow sensor, the circulation pump switches on and is filled up to the wash level. The water volume of completed rinse cycles is recorded by the electronics counter which determines when the water softener requires regeneration. Before each regeneration step the electronics check whether the capacity of the water softener is adequate for a complete Normal Programme Sequence. If not, regeneration starts. The water softening system is regenerated and rinsed through during the wash cycle. The regeneration valve on the water softening system is opened for this purpose. The stored volume of water flows into the salt dispenser via the valve, absorbs salt and flows as saline solution through the water softening system into the pump sump. Rinsing takes place in three stages, each with one calculated volume of water. A Free flow line H Ion exchanger B Leakage water I Regeneration valve C Regeneration chamber J Flow sensor D Safety pressure switch K From drainage pump E To the pump sump L To the drainage hose F Float in the base pan M Drainage hose ventilation valve G Salt dispenser 202_ _ara_en_b a Seite 37 von 56

38 4.22 Water points The water points are responsible for alternate rinsing (appliance rinses alternately in the top and bottom basket, bottom basket 60 sec. / top basket 55 sec., changeover lasts approx. 5 sec.) and consist of a synchronous motor with gears, cam plate, micro switch and slide. The synchronous motor is actuated via a triac. The synchronous motor drives the gears and therefore the cam disc and the locking disc. The washer locks the relevant water channel to the spray arms. The locking disc has two openings which differ in size. The smaller opening reduces the flow rate to the top basket. The controller receives information on the position of the slide from the micro switch which is actuated by the cam disc. The water points are integrated in the instantaneous water heater and may be replaced as a complete unit only. Technical specifications: Nominal voltage V (synchronous motor) Frequency 50 / 60 Hz Resistance approx. 9.3 kω A = Micro switch B = Cam disc C = Locking disc 202_ _ara_en_b a Seite 38 von 56

39 4.23 Montage of the electronic module High position (Regional Brands) The position of the electronic module depends on the brand. There are two posibilities. The module is fixed in the signed points. Caution! If we don t install the module in the right position, we can break the guide of light against the front panel Low position (Bosch and Siemens) The module is fixed in the signed points. 202_ _ara_en_b a Seite 39 von 56

40 5 FUNCTIONS in 1 detergent detection function The rinse aid temperature is increased by 3 K for the 3 in 1 detergent detection function (as for intensive drying). This improves the drying result. The 3 in 1 detergent detection function is activated if: the electronics detect low rinse aid the rinse-aid refill indicator is deactivated The "Intensive drying" additional function can still be selected, but it has no effect on the rinse-aid temperature. The maximum temperature increase is 3 K. 202_ _ara_en_b a Seite 40 von 56

41 6 REPAIR 6.1 Diagnosis aids Transparent door: Material no.: appliance dimension 81 cm Material no.: appliance dimension 86 cm Test prod: Material no.: (remove the components from the module before measuring the resistance) Protective gloves: Material no.: size 9 = size 10 = Salt dispenser nut: Material no.: _ _ara_en_b a Seite 41 von 56

42 7 FAULT DIAGNOSTICS 7.1 Controller / module with display Customer complaint Cause Remedial action Running time too long Alternating rinse technology, energy saving Advise customer, See Consumption rates or Alternate rinsing technology Component is not actuated Triac on the module does not switch properly, smoke traces may be visible on the module Time skips Washtecnic. Adjust the time in the display to the actual wash step. Before replacing the module, always measure the connected consumers (valves, actuators, etc.). Comply with safety instructions Advise customer. There are some factor that have influence: water temperature, amount of utensils, degree of dirt on the utensils 202_ _ara_en_b a Seite 42 von 56

43 7.2 Draining Customer complaint Cause Remedial action Pump is running audibly, but conveying no or little water Filter system blocked Advise customer, see operating instructions for cleaning the filter. Clean the filter. Trap in the inlet spigot (pump sump) dirty. Non-return flap is stuck in the outlet Advise customer. Clean the trap in the intake spigot of the pump. Remove non-return flap. Check if valve and seat are dirty and, if required, clean. Outlet hose blocked Remove blockage (do not forget the hoses in the appliance), blockage in the area of the hose connection at the water inlet; to check, remove both drainage hoses. Pump is buzzing audibly. Pump mechanically blocked (blocked or damaged pump) Clean pump or, if required, remove pump Pump is not running See also pump is buzzing or running audibly Appliance drains water briefly, circulates water, drains water, etc. Water tap was closed when dry, the heat exchanger was still empty, the filling switch is waiting for level The pump is not activated Alternate pumping (detergent-solution pump and circulation pump are actuated alternately) Advise customer, wait for programme sequence and then close water tap. (refer to Aqua Stop if featured) Actuate pump (test programme) and check according to circuit diagram. Observe safety instructions Observe safety instructions Advise customer. 202_ _ara_en_b a Seite 43 von 56

44 7.3 Odour Customer complaint Cause Remedial action Smell of burning Connection cable improperly extended Advise customer, comply with safety instructions in the operating instructions Smell of chemicals Socket to which the appliance is connected is charred (cause: socket has bad contact) Damaged windings or insulation fault on the consumers Bad electrical connection or creep age clearances on electrical components (note edge connectors) Detergent or rinse aid Bonding agent of noise insulation (fleece, insulating mats) Evaporation of electronic components or printed circuit boards Advise customer; socket and connection cable must be replaced Measure consumers (test programme) and check according to circuit diagram. Follow safety instructions Eradicate creep age distance and transition resistance, look out for leaks, high-current cables must not be extended Advise customer. Customer specifies the chemicals; if required, change product (with citrus aroma ) or recommend aroma dispenser (mat. no ) Advise customer concerning the new aroma. Advise customer. 202_ _ara_en_b a Seite 44 von 56

45 7.4 Noises Customer complaint Cause Remedial action Striking noises on the water inlet in the pipe system Installation or cross-section of the water line (usually occurs on appliances which feature Aqua Stop valve because the valve is connected directly to the tap) Advise customer and refer to plumber (have pressure reducing valve fitted). Rattling noises during the rinse cycle Alternating noises in the rinse programme Spray arm is striking the utensils Alternate rinse technology (top basket rinsing 55 sec., changeover 5 sec., bottom basket rinsing 60 sec.) utilising water points Alternate pumping (detergent-solution pump and circulation pump are actuated alternately) Advise customer, utensils not arranged properly Advise customer, put utensils in appliance; if required, install lower spray arm with larger nozzles, mat. no See water points Advise customer 202_ _ara_en_b a Seite 45 von 56

46 7.5 Rinsing result Food remnants or sandy residue Limescale (Analyse with diagnosis case / 10 % hydrochloric acid) Starch deposits (Analyse with diagnosis case / iodine solution) Water-soluble or regeneration salt residue (Analyse with diagnosis case / dest. water) Discoloration / colour residue (e.g. tea, tomato juice, coffee, lipstick, etc.) (analyse with diagnosis case / chlorine bleach) Detergent residue (Analyse with diagnosis case / dest. water) Water-insoluble residue / damage to utensils 202_ _ara_en_b a Seite 46 von 56

47 Food remnants or sandy residue (see additional information in general repair instructions) Customer complaint Cause Remedial action Food remnants or sandy residue Rough, micro or fine sieve blocked, sieve not locked in the pump sump Advise customer, sieve insert and care Spray arm nozzles, roof shower blocked Spray arm bearings sticking (dirt around the bearings) Foreign body around the drainage hose connections on the water inlet (drainage channel) Fish-trap in the pump sump partially blocked Drainage hose kinked No detergent dosage or insufficient dosage, wrong programme selected Unfavourable arrangement of the dishes, etc. (very large pieces in the lower rack, e.g. pots), avoid holders, dish racks twisted Spray arm is blocked by dishes or cutlery Clean parts if necessary, refer customers to correct sieve insert Clean parts if necessary, refer customers to correct sieve insert Clean Advise customer, clean Lay drainage hose correctly Advise customer, observe dosage instructions for the detergent, select programme with higher temperature Check dispenser Advise customer, straighten dish racks (see instructions for use) Advise customer 202_ _ara_en_b a Seite 47 von 56

48 Customer complaint Cause Remedial action Food remnants or sandy residue Snorkel noises; circulation pump does not run uniformly, insufficient water in the appliance (note: intervals approx. 1 min if using alternate rinsing technology) Check level sensor function (implement filling process) Non-return valve leaking, dirty water flows back into the appliance Remove non-return valve, check valve and seat for dirt and, if required, clean. in the top basket Appliance does not circulate water Appliance does not heat up Only bottom basket is rinsed Check circulation pump Check heating circuit according to circuit diagrams, note pressure switch on the instantaneous water heater (the circulation pump cannot build up adequate pressure if there is insufficient water in the appliance). Blockage in the rinse cycle of the top basket; please note that rinsing takes place only in the bottom basket in some programme sections. Please use the customer service test programme and diagnosis aid for testing. 202_ _ara_en_b a Seite 48 von 56

49 Limescale (see additional information in the general repair instructions) Customer complaint Cause Remedial action Limescale on the utensils Hardness range incorrectly set or untreated water hardness > 50 dh, check residual hardness in the wash and final rinse cycles Adjusting hardness range Advise customer, use phosphatic detergent. Does not regenerate Untreated water valve does not open -> appliance is filled with untreated water only. Adjust regeneration position and conduct performance test (observe drainage of regeneration dispenser) Check regeneration valve carefully (mechanical valve stem; electrical actuation / coil) Check untreated water valve (mechanical valve stem; electrical actuation / coil) 202_ _ara_en_b a Seite 49 von 56

50 Starch deposits (see additional information in the general repair instructions) Customer complaint Cause Remedial action Starch deposits on the utensils Underdosing of detergent (wrong detergent) Wrong programme selected (too weak programme selected) Advise customer, use enzyme detergent Advise customer, select correct programme Appliance connected to hot water, water inlet temperature too high Check hot water connection (setpoint: lower than 60 C), advise customer; if required, connect to cold water 202_ _ara_en_b a Seite 50 von 56

51 Water-soluble or regeneration salt residue on the dishes (see additional information in the general repair instructions) Customer complaint Cause Remedial action Water-soluble residue Regeneration salt on the utensils Leaking salt dispenser cover (check screw-fitting, regeneration dispenser is dispensing slowly) Leaking regeneration valve (regeneration dispenser is dispensing slowly) Regeneration valve continuously actuated Initial clouding of glass: can only apparently be wiped off Detergent-solution carry-over Combination product Advise customer, eliminate leaks Check valve and/or valve seat Electrical check with circuit diagrams See Damage to utensils See Food remnants Advise customer 202_ _ara_en_b a Seite 51 von 56

52 Discoloration / colour residue (see additional information in the general repair instructions) Customer complaint Cause Remedial action Colour residue Insufficient detergent used Advise customer, increase amount of detergent Rainbow streaks Silver cutlery tarnishes Plastic discoloration by, e.g.: tomato remnants, tea, coffee, etc. Detergent very lumpy, washing effect and dissolving performance reduced Selected programme not intensive enough (the contact time of the oxidation bleach is too brief for a short running time and at low temperatures) Silicate deposits only on glasses (not to be removed) Final rinse dosing set too high (can be rinsed off with water) Discoloration due to sulphur compounds in the air and in various food remnants Use detergent containing chlorine bleach. Recommend machine detergent for discoloration in the appliance Advise customer, store detergent dry and sealed Advise customer, use more intensive programme No remedial action possible (damage to glass) Reduce dosing setting Advise customer, rinse silver cutlery immediately after use 202_ _ara_en_b a Seite 52 von 56

53 Detergent residue (see additional information in the general repair instructions) Customer complaint Cause Remedial action Detergent residue Detergent cover blocked by utensils (does not open fully) Advise customer, dishwasher not loaded properly Detergent cover does not open fully Wrong programme selected Tablets used in quick or short programme Incorrect application of tablets (note use in dispenser or cutlery basket) Spray arm nozzles blocked (filters locked) Dispensing device in spray shadow (large pan, etc. positioned at bottom left) Check draining, non-return valve Detergent very lumpy, washing effect and dissolving performance reduced Replace spring of dispensing device Advise customer Tablet dissolving time is too long Advise customer, follow instructions for use of the tablets Advise customer Advise customer See food remnants Advise customer 202_ _ara_en_b a Seite 53 von 56

54 7.6 Drying result Customer complaint Cause Remedial action Not drying correctly No rinse aid in the dispensing device Advise customer Appliance connected to hot water, appliance is suitable for hot-water connection, but not recommended. Appliance not heating Programme selected without drying Advise customer, refer to function of the heat exchanger; if required, connect the appliance to cold-water supply Check heating circuit according to circuit diagrams, note pressure switch on the instantaneous water heater (the circulation pump cannot build up adequate pressure if there is insufficient water in the appliance). Advise customer, quick programme is without drying cycle, drying level option is too low The rinse aid integrated in tablets has dissolved too early Advise customer, tablet is unsuitable for this programme Plastic parts Combined detergent products (2 in 1 / 3 in 1) Plastics retain very little heat and have a hydrophobic surface which is difficult to moisten. As a result, droplets will form during drying. Advise customer, recommend separate detergent products (separate rinse aid and detergent) 202_ _ara_en_b a Seite 54 von 56

55 7.7 Circulation pump Customer complaint Cause Remedial action Circulation pump does not start After a prolonged idle time the seal set may stick to the pump wheel. The seal set must be replaced, 202_ _ara_en_b a Seite 55 von 56

56 8 TECHNICAL SPECIFICATIONS 8.1 General technical specifications Voltage / frequency V / 50 Hz Connected load 2.3 kw Heat output 2.15 kw Fuse 10 / 13 A 8.2 Consumption rates Appliance with water points without heat exchanger Intensive 70 Auto Normal 65 Eco 50 Gentle 40 Quick 35 Prerinse Duration in min Current consumption in kwh Water consumption in litres With Aqua sensor The indicated values may deviate up or down. The values correspond to laboratory measured values in compliance with EN50242 at the start of the series. 202_ _ara_en_b a Seite 56 von 56